/* ============================================================
 *  File Relay – Glassmorphism UI
 * ============================================================ */

:root {
  --bg-0: #0b0a25;
  --bg-1: #13123a;
  --fg: #eef0ff;
  --fg-muted: #b4b6d6;
  --fg-dim: #8084a6;
  --primary: #8b5cf6;
  --primary-2: #6366f1;
  --accent: #ec4899;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-strong: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 8px 32px rgba(2, 6, 23, 0.45);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --transition: 220ms cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(ellipse at top, #1c1b4a 0%, var(--bg-0) 65%);
  color: var(--fg);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.55;
}

/* ---------- Aurora background blobs ---------- */
.bg-aurora {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  pointer-events: none;
}
.bg-aurora .blob {
  position: absolute; width: 48vw; height: 48vw;
  border-radius: 50%; filter: blur(80px); opacity: .55;
  animation: float 22s ease-in-out infinite alternate;
}
.bg-aurora .blob-1 {
  background: radial-gradient(circle at 30% 30%, #8b5cf6, transparent 65%);
  top: -10vw; left: -10vw;
}
.bg-aurora .blob-2 {
  background: radial-gradient(circle at 70% 30%, #ec4899, transparent 65%);
  top: -10vw; right: -10vw;
  animation-delay: -8s;
}
.bg-aurora .blob-3 {
  background: radial-gradient(circle at 50% 80%, #06b6d4, transparent 65%);
  bottom: -16vw; left: 30vw;
  animation-delay: -14s;
}
@keyframes float {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(6vw, -4vw) scale(1.1); }
  100% { transform: translate(-4vw, 4vw) scale(.95); }
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px; gap: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--fg);
  font-weight: 700; font-size: 18px; letter-spacing: .3px;
}
.brand-mark {
  display: inline-grid; place-items: center;
  width: 36px; height: 36px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 6px 20px rgba(139, 92, 246, .45);
}
.topnav { display: flex; gap: 4px; align-items: center; }
.topnav a {
  color: var(--fg-muted); text-decoration: none;
  padding: 8px 14px; border-radius: 10px;
  transition: var(--transition);
  font-size: 14px; font-weight: 500;
}
.topnav a:hover { color: var(--fg); background: var(--glass-bg); }
.topnav a.ghost { color: var(--fg-dim); }

/* ---------- Container ---------- */
.container {
  max-width: 1080px; margin: 0 auto;
  padding: 16px 32px 80px;
}

/* ---------- Glass panel ---------- */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  backdrop-filter: blur(22px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}
.panel {
  padding: 28px;
  margin-bottom: 22px;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px; gap: 12px; flex-wrap: wrap;
}
.panel-head h3 { margin: 0; font-size: 18px; }
.head-actions { display: flex; gap: 8px; align-items: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 11px 20px; border: 0; cursor: pointer;
  border-radius: 12px; font-size: 14px; font-weight: 600;
  text-decoration: none; transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.btn:active { transform: scale(.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white;
  box-shadow: 0 8px 24px rgba(99, 102, 241, .35);
}
.btn-primary:hover {
  box-shadow: 0 12px 30px rgba(99, 102, 241, .55);
  transform: translateY(-1px);
}
.btn-ghost {
  background: var(--glass-bg-strong);
  color: var(--fg);
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover { background: rgba(255,255,255,.18); }
.btn-danger {
  background: linear-gradient(135deg, #ef4444, #b91c1c);
  color: white;
}
.btn-sm { padding: 7px 12px; font-size: 12px; border-radius: 8px; }
.btn-block { width: 100%; }

/* ---------- Hero / Landing ---------- */
.hero { padding: 56px 48px; text-align: center; }
.hero-inner { max-width: 720px; margin: 0 auto; }
.title {
  font-size: clamp(36px, 6vw, 56px); margin: 0 0 12px;
  background: linear-gradient(135deg, #fff, #c4b5fd 40%, #f0abfc);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: -1px;
}
.subtitle {
  font-size: clamp(16px, 2vw, 20px); color: var(--fg-muted);
  margin: 0 0 6px; font-weight: 500;
}
.muted { color: var(--fg-muted); }
.small { font-size: 14px; }
.tiny { font-size: 12px; }
.error { color: var(--danger); }
.center { text-align: center; }
.cta-row {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin: 28px 0 20px;
}
.feature-list {
  list-style: none; padding: 0; margin: 28px auto 0;
  display: grid; gap: 10px; max-width: 580px;
  text-align: left;
}
.feature-list li {
  padding: 10px 14px; border-radius: 12px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  font-size: 14px; color: var(--fg-muted);
}

/* ---------- Auth ---------- */
.auth-wrap {
  display: grid; place-items: center;
  min-height: 60vh; padding: 20px;
}
.auth-card {
  width: 100%; max-width: 420px; padding: 36px 32px;
  text-align: center;
}
.auth-icon {
  width: 72px; height: 72px; margin: 0 auto 16px;
  display: grid; place-items: center; font-size: 36px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 12px 28px rgba(139,92,246,.45);
}
.auth-title { margin: 6px 0 6px; font-size: 22px; }
.auth-form { margin-top: 24px; display: grid; gap: 14px; }
.field {
  position: relative; display: grid; gap: 6px;
  text-align: left;
}
.field > span {
  font-size: 13px; color: var(--fg-muted);
  font-weight: 500;
}
.field input, .field select, #search {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  color: var(--fg);
  padding: 12px 14px; border-radius: 10px;
  font-size: 14px; outline: none;
  transition: var(--transition);
  font-family: inherit;
}
.field input:focus, .field select:focus, #search:focus {
  border-color: var(--primary);
  background: rgba(255,255,255,.12);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, .2);
}
.field .reveal {
  position: absolute; right: 8px; top: 32px;
  background: transparent; border: 0; color: var(--fg-muted);
  cursor: pointer; padding: 6px; border-radius: 8px;
}
.field .reveal:hover { color: var(--fg); background: rgba(255,255,255,.08); }
.auth-footer { margin-top: 16px; font-size: 13px; }
.auth-footer a { color: var(--fg-muted); text-decoration: none; }
.auth-footer a:hover { color: var(--fg); }

/* ---------- Upload page ---------- */
.upload-card { display: grid; gap: 22px; }
.dropzone {
  border: 2px dashed rgba(255,255,255,.18);
  border-radius: var(--radius);
  padding: 48px 24px; text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.dropzone.dragover {
  border-color: var(--primary);
  background: rgba(139,92,246,.12);
  transform: scale(1.01);
}
.dz-icon { font-size: 48px; margin-bottom: 12px; }
.dz-title { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
.dz-sub { margin-bottom: 18px; }

.options-row {
  display: grid; grid-template-columns: 1fr 1.4fr;
  gap: 18px; margin-top: 22px;
}
@media (max-width: 640px) { .options-row { grid-template-columns: 1fr; } }
.quota-bar {
  width: 100%; height: 8px; border-radius: 999px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
}
.quota-fill {
  height: 100%; width: 0%; border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .3s ease;
}

/* ---------- Queue ---------- */
.queue {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 12px;
}
.queue li {
  display: grid; grid-template-columns: 36px 1fr auto;
  gap: 14px; align-items: center;
  padding: 12px 14px; border-radius: 12px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.07);
}
.q-icon {
  width: 36px; height: 36px; display: grid; place-items: center;
  border-radius: 10px; background: rgba(139,92,246,.18);
  font-size: 18px;
}
.q-meta { min-width: 0; }
.q-name {
  font-weight: 600; white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis;
}
.q-bar {
  height: 6px; border-radius: 99px; margin-top: 6px;
  background: rgba(255,255,255,.08); overflow: hidden;
}
.q-bar > div {
  height: 100%; width: 0%; border-radius: 99px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .2s ease;
}
.q-status { font-size: 12px; color: var(--fg-muted); }
.q-status.done { color: var(--success); }
.q-status.error { color: var(--danger); }

/* ---------- Result ---------- */
.result-box {
  display: grid; gap: 10px;
  padding: 16px; border-radius: 14px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
}
.result-row {
  display: flex; gap: 8px; align-items: center;
  font-size: 14px; flex-wrap: wrap;
}
.result-row > span { color: var(--fg-muted); min-width: 90px; }
.share-row { display: flex; gap: 8px; flex: 1; min-width: 0; }
.share-row input {
  flex: 1; min-width: 0;
  background: rgba(0,0,0,.25); border: 1px solid rgba(255,255,255,.12);
  border-radius: 10px; color: var(--fg);
  padding: 8px 12px; font-family: 'SF Mono', Consolas, monospace;
  font-size: 12px;
}

/* ---------- Files list ---------- */
.files-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 8px;
}
.files-list li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 14px; align-items: center;
  padding: 12px 14px; border-radius: 14px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.07);
  transition: var(--transition);
}
.files-list li:hover {
  background: rgba(255,255,255,.07);
}
.f-icon {
  width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(139,92,246,.25), rgba(236,72,153,.25));
  border: 1px solid rgba(255,255,255,.1);
  font-size: 22px;
}
.f-meta { min-width: 0; }
.f-name {
  font-weight: 600;
  white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis;
}
.f-sub { font-size: 12px; color: var(--fg-muted); margin-top: 2px; }
.f-actions { display: flex; gap: 6px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 32px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(15, 16, 36, .92);
  color: var(--fg); padding: 12px 18px; border-radius: 12px;
  border: 1px solid var(--glass-border);
  font-size: 14px; opacity: 0; pointer-events: none;
  transition: var(--transition);
  box-shadow: var(--glass-shadow);
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: rgba(248,113,113,.55); }
.toast.success { border-color: rgba(52,211,153,.55); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .topbar { padding: 14px 18px; }
  .container { padding: 8px 16px 60px; }
  .hero { padding: 36px 20px; }
  .panel { padding: 20px; border-radius: var(--radius); }
  .topnav a:not(:last-child) { padding: 8px 10px; }
}

/* ---------- Native select dropdown fix ----------
   暗色主题下原生 <select> 展开的选项列表为系统白色背景，
   必须强制给 option 深色文字，避免白底白字不可读 */
select option {
  background: #ffffff;
  color: #1f2937;
}
select option:checked {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  color: #ffffff;
}
select option:hover {
  background: #ede9fe;
  color: #1f2937;
}